baber/WOPTO huggingface dataset:
Patent GB-844754-A (GB)
Title: Improvements in and relating to furnaces for pulverised fuel
IPC: F22B37/14
Filed: 1956-07-04
Abstract: 844,754. Cyclone furnaces. WALTHER & CIE A.G. July 4, 1956 [July 8, 1955], No. 20737/56. Class 51 (1). In a vertical cyclone furnace, the fuel is supplied by burners arranged in a circle in the cover of the combustion chamber, air is supplied through nozzles arranged in a circle of larger diameter with a correspondingly higher speed, and a gas outlet at the side of the lower end of the chamber with an ash-deflecting gutter above at the sides of the opening. A vertical or slightly inclined cyclone furnace with walls formed of water tubes covered with a refractory lining is fed with pulverized fuel through burners 8 in the cover 5, and air is supplied at a higher speed to a ring of nozzles 9 in the cover outside the burners. The gas outlet 11 at the lower part of the wall of the chamber has an ash-deflecting gutter 12 above and at the sides, and leads into the bottom of the radiation space 14 of a boiler plant. The outer wall of the combustion chamber is level with the front wall of the radiation space and the tubes forming the walls of the combustion chamber are continued into the walls of the radiation space. The ash outlet 13 is at the level of the bottom of the radiation space. A core tube 17, formed of water tubes continuing into the wall of the radiation space, may form the inner boundary of the swirling gas flow in the combustion chamber. The core tube 17 may have a gradually increasing cross-section with a sudden contraction as at 19, and tertiary air may be supplied to nozzles 21 in the downwardly directed part of the bulge from the air chests 10 supplying the nozzles 9 in the cover. The wall of the combustion chamber may have outward bulges 22 with air supplied to them, or gradual restrictions 24 with sharp expansions below them. The bulges in the core tube and chamber wall may be staggered, or at the same level.
Patent GB-1486035-A (GB)
Title: Process plant
IPC: B01J19/00
Filed: 1975-05-15
Abstract: 1486035 Endothermic reactions UNITED KINGDOM ATOMIC ENERGY AUTHORITY 22 April 1976 [15 May 1975] 20744/75 Heading B1X A process plant for coupling to a high temperature gas cooled nuclear reactor serving as a central heat source for the supply of process heat includes at least one bank of parallel process tubes each tube defining therewithin a reaction zone for endothermic chemical reactions, conduits for hot gas surrounding the process tubes for heating the tubes, a first a pair of header pipes respectively connected to supply reactants to one end of each of the process tubes and to accept reacted products from the other end of each of the process tubes and a second pair of header pipes con nected respectively to supply heating gas to one end of the conduits and to receive said gas from the other end of each of the process tubes. As shown, as applied to the production of hydrogen by methane/steam reforming, hot helium from a nuclear reactor 1 circulates to reformer 6 by duct 5 and back by duct 7. A plurality of modules (only one is shown) is provided comprising tubes 8 surrounded by hot gas conduits 9; the hot gas conduits are connected at their ends to headers 12 and 13 for supply and removal of helium and the inner tubes are connected at their ends to headers 14 and 15 for the supply of reactants and removal of product and excess reactants.
Patent GB-1363958-A (GB)
Title: Production of yarn
IPC: D01H4/28
Filed: 1972-05-04
Abstract: 1363958 Open end spinning; laying fibres SPINNEREIMASCHINENBAU K A R L - MARX-STADT VEB 4 May 1972 20765/72 Headings DID DIF and D1N A yarn is formed by open end spinning by feeding fibres to a yarn forming point where the fibres divide into interengaging tufts of fibres, these fibres then being drawn off sideways as yarn with S and Z twist with the interengaging of the tufts being continuously formed by the twisting of the fibres which are fed into the tufts.  As shown the fibres are fed via duct 1 into an electrostatic field formed between two electrically charged twisting devices. The spun yarn 7 is withdrawn by rollers 8, 9. The fibres can be fed to the yarn forming point on conveyor belt(s). The fibres can be aligned on the belt parallel to one another in slightly overlapping relationship by electrostatic devices arranged under the belt at a fibre depositing station. The fibres on the belt may be brushed so as to influence the parallelism of the fibres (Figs. 3 and 4, not shown).
Patent GB-608231-A (GB)
Title: Improvements in hat and like pegs
IPC: A47F7/06
Filed: 1946-07-09
Abstract: 608,231. Hat pegs. NEWLANDS, E. M. July 9, 1946, No. 20844/45. [Class 89 (ii)] A spring clip for application to a rod carries one or more projections to serve as pegs for hats. The clip may serve to increase hat accommodation in wardrobes &c. The ends of the clip carry hooked members 10, Fig. 3, with inturned ends 10a to enable a good grip to be obtained on a range of diameters of rod, e.g. from 1 to 1¢ inches. On the other side of the pivot 11, Fig. 4, one of the clip arms 13 is prolonged sufficiently to serve to operate the clip, whilst the other 13a is longer and receives the hat, the end having a rubber &c. ferrule 13b. Further arms 20 may be pivoted to the arm 13a by friction-tight means to enable the relative position of the pegs to be adjusted.
Patent GB-999132-A (GB)
Title: Improvements in or relating to building elements
IPC: E04C2/26
Filed: 1960-06-14
Abstract: A polyester composition comprises a mixture of polyester resins, one of which is softer and more flexible than the other, and an inert mineral stone filler constituting at least 50% by weight of the composition.  The polyester mixture may constitute about 50% by weight of the composition and may be made up of 4 parts by weight "Bakelite" (Trade Mark) No. 17486, and 1 part "Bakelite" No. 17438. The filler may be sand, crystal quartz, calcium carbonate, marble, crushed granite, talc or asbestine; mesh sizes being given Specification 874,759 is referred to.ALSO:A panel or tile is produced by applying to at least one side of a fibrous reinforcing lamina, in a mould or against a master surface or template, a composition essentially comprising an inert mineral stone filler bonded by a polyester, epoxide or polyurethane resin, the filler representing at least 50% by weight of the composition, and hardening the resin.  The fibrous reinforcing lamina may be composed of woven or non woven glass fibre, synthetic fibre e.g. of nylon, or metal wire, and the filler may be crystal quartz, calcium carbonate, marble, talc, crushed granite, asbestine, or silica sand.  The stone-bonding resin employed nearest to the outer surface of the product may be more flexible than that employed nearer to the reinforcing material.  The filler may include pigment, crushed stone or other decorative ingredient, and the tile or panel may be rubbed down superficially after hardening.  Fire proofing compounds may also be incorporated in the panel or tile.  The tile or panel may be in the form of a sheet or other generally flat shape which may possess engraved, embossed or other relief effects on a surface. Specification 874,759 is referred to.
Patent GB-1142164-A (GB)
Title: Improvements in or relating to weft cutting devices for shuttleless looms
IPC: D03D47/00
Filed: 1966-05-11
Abstract: 1,142,164. Looms. NUOVO PIGNONE S.D.A. 11 May, 1966 [15 May, 1965]. No. 20987/66. Heading DIE. A weft cutting device for a shuttleless loom comprises a pair of shear arms 1, 2 carrying co-operating cutting blades 1a, 2a which are each positively activated by separate cam and follower means 4, 6 and 5, 7 from a mainshaft 3 of the loom. The arms 1, 2 may be both pivoted on a common pivot 10 and the blade 1a is adjustable about a pivot pin 12 by bolts 19 and loaded by a spring 13 against blade 2a. An aperture 16 is provided between the two arms through which uncut weft threads from the cloth extend to a weft selector device (not shown). A selected weft when captured by the inserting needle is engaged by an ear 11 on the lower cutter 2a and drawn between the cutters to be cut.
Patent GB-625722-A (GB)
Title: Improvements in or relating to coupling networks
IPC: H03H7/00
Filed: 1947-08-01
Abstract: 625,722. Impedance networks. WESTERN ELECTRIC CO., Inc. Aug. 1, 1947, No. 20990. Convention date, March 18, 1942. [Class 40 (viii)] A network for connecting a purely reactive equalizer having an impedance function Z to a line of characteristic resistance Ro has open circuit driving point impedances at its line and load terminals of Ro+ 2Ro<SP>2>/Z and 2Ro + Ro<SP>2>/Z respectively and an open circuit transfer impedance of #2(R<o>+Ro<SP>2>/Z). Such a network has an impedance when looking into it from either direction when the far end is closed with the appropriate line resistance Ro or equalizer impedance Z, and introduces the minimum possible attenuation (3 decibels) consistent with a flat input impedance characteristic for the combined network and equalizer. Fig. 1 shows a line 11 coupled to an equalizer 12 by one form of network according to the invention Ro<SP>2>/Z representing a network inverse with respect to that of the equalizer. Further networks are given of which Figs. 5, 7, and 9, are typical. Specification 542,175 is referred to.
Patent GB-204458-A (GB)
Title: An improved process for the catalytic cracking of heavy hydrocarbons, mineral oils, oil residues, tars or the like
IPC: C10G11/02
Filed: 1922-08-01
Abstract: 204,458. Erd÷l-und Kohl-Verwertung Akt.-Ges., and Erlenbach, E. Aug. 1, 1922. Hydrocarbons, cracking.-In cracking heavy hydrocarbons, mineral oils, oil residues, tars, &c. by heating in presence of a catalyst, the catalyst 4 is supported on a perforated floor 3 in the still and the oil is circulated through it by means of a pump 5 or like device. The vapours pass through a dephlegmator 8. Suitable catalysts are metals, such as iron or nickel, alkalies such as burnt lime, metallic chlorides such as aluminium chloride, silicic acid compounds such as pumice, diatomite or hydrosilicates, powdered coke or active charcoal which is prepared by charring wood in the presence of suitable chemicals.
Patent GB-1353544-A (GB)
Title: Supported bismuth/phosphorus molybdate catalysts
IPC: B01J23/31
Filed: 1971-04-19
Abstract: 1353544 Acrylonitrile ERDOLCHEMIE GmbH 19 April 1971 [20 Feb 1970] 21124/71 Heading C2C [Also in Division B1] Ammoxidation is effected in the presence of catalyst which consists essentially of support material in association with bismuth, molybdenum and, optionally, phosphorus in oxidic form and which has been heated at a temperature of from 600 to 750 C., advantageously from 620 to 670 C. for example for a period of from 0À5 to 20 hours, advantageously from 3 to 5 hours, the catalyst being either fresh catalyst or catalyst which has been used in ammoxidation prior to such heating. The support material may constitute less than 85 weight per cent of the catalyst which may contain from 10 to 30 weight per cent bismuth, from 6 to 18 weight per cent molybdenum and up to 1 weight per cent phosphorus and which may have been prepared by a generally conventional procedure involving coprecipitation, impregnation or spray drying. Examples relate to the preparation of acrylonitrile by a procedure wherein a gaseous mixture comprising propylene, ammonia, air and steam is contacted, at a temperature of 460 C. and a pressure of 1À2-1À3 atmospheres, with a fluidized bed of catalyst which contains silica support material, bismuth and molybdenum, either with (Examples 1 to 4) or without (Example 5) phosphorus, which has been heated to a temperature in the 500-700 C. range and which either has been used in the ammoxidation of propylene prior to such heating (Example 1) or is fresh catalyst (Examples 2 to 5). Reference is made to Specification 867,458 in respect of catalyst preparation.
Patent GB-1506293-A (GB)
Title: Process for treating cellulosic material with liquid ammonia
IPC: D06M101/06
Filed: 1975-05-19
Abstract: 1506293 Treating cellulosic material OPI CRYOCHIMIE 19 May 1975 [28 May 1974] 21145/75 Heading DIP A rocess for treating fabric or other textile material, partly comprised of natural or regenerated cellulosic fibres, comprises impregnating the material with liquid ammonia to produce an ammonia content in excess of 75% by weight, based on the weight of the material, applying stress to the material which has been rendered plastic by the excess ammonia to restore or maintain the original dimensions of the material, and reducing the stress during removal of the ammonia therefrom. The ammonia removal steps are such that the actual ammonia content is less than 75% by weight, based on the weight of the material, after less than 3 seconds, and is less than 30% by weight, based on the weight of the material, after less than 60 seconds, and is less than 15% by weight after less than 300 seconds. The ammonia is completely removed while the material is under a stress of below 5% of the breaking load (as defined in the text) of the material. The ammonia content is higher than 75% by weight, preferably between 100 and 200% to give the material a plastic state. The material may be immersed in liquid ammonia or sprayed with it. The impregnating period, during which stress is applied, is greater than 1 second and preferably between 10 and 60 seconds. Stress can be applied by maintaining the material on a rigid support. Preferably less than 1 second should elapse between the removal of the stress and the reduction in the amount of ammonia to less than 75%. Similarly less than 20 seconds should elapse before less than 30% of ammonia remains. Stress may be applied to the material before impregnation to prevent relaxation due to the action of the ammonia. The material can be a yarn, a sheet, a woven fabric or a knitted fabric. The process improves properties of the material, such as dynamometric strength, elongation at rupture, dimensional stability etc.
Patent GB-701180-A (GB)
Title: Improvements in or relating to synthetic rubber materials
IPC: C09J109/02
Filed: 1951-09-07
Abstract: A sprayable composition comprises a rubber-like butadiene-acrylonitrile copolymer, a resin, and a liquid mixture containing 30-40 per cent. solvent for the copolymer-resin mixture and 70-60 per cent. non-solvent for the copolymer.  Specified resins are rosin, fossil resins, phenolformaldehyde, butyl-phenol formaldehyde, chlorinated rubber and coumarone-indene.  Specified solvents are methyl-ethyl ketone, methyl isobutyl ketone, methyl-propyl ketone, methyl isopropyl ketone, diisopropyl ketone, ethyl acetate, isopropyl acetate, butyl acetate and amyl acetate, while denatured alcohol is a specified non-solvent.  It is preferred that the composition comprises about 15-40 per cent. solids and that it contains 8-20 per cent. by weight of the copolymer.  Compounding ingredients such as calcium carbonate may also be present.  The composition may be made by milling a butadiene-acrylonitrile composition into sheet form, and dividing the sheet into small particles which are added to a mixture containing resin dissolved in a resin-rubber solvent, adding the above liquid mixture and agitating to produce the sprayable composition.
Patent GB-1473468-A (GB)
Title: Optical fibre connectors
IPC: H02G15/08
Filed: 1975-05-19
Abstract: 1473468 Light guides HITACHI Ltd 19 May 1975 [17 July 1974] 21260/75 Heading G2J A connector for optical fibres 1 of the core/ cladding or gradient index type comprises a first cylindrical member which may be solid 2, Fig. 1, or hollow 6c, Fig. 5, and which has at least one first groove 3 and at least one second groove 4 formed axially on a surface of the first groove 3. Groove 4 accommodates the two fibres 1 to be connected. A second member which may be a hollow cylinder 6, Fig. 1, or a solid cylinder 2b, Fig. 5, is rotatably located around, Fig. 1, or within, Fig. 5, the first member and has at least one tapered portion 8, Fig. 1, 2'b, Fig. 5, in its surface in registration with the first groove(s) 3. A resiliently deformable holding member 5 is located in the or each first groove 3 and is able to be forced towards the fibres 1 in response to pressure provided by a part of the tapered portions 8, 2'b upon relative rotation of the first and second members. In a modification of Fig. 1, Fig. 3, (not.shown) the second member is a cylinder whose inner and outer surfaces are mutually eccentric and which is held for rotation between end members. In another modification of Fig. 1, Fig. 4, (not shown) eight grooves and eight tapered portions are provided. In another embodiment, Fig. 6, (not shown) the basic arrangements of Figs. 1, 5 are effectively combined as shown.
Patent GB-1145840-A (GB)
Title: Aerating plant for the purification of waste water according to the activation process
IPC: C02F3/12
Filed: 1966-05-13
Abstract: 1,145,840. Sewage treatment plant. B. ZINK, M. ZINK, K. ZINK, and J. ZINK, [trading as MENZEL & CO.]. 13 May, 1966 [15 May, 1965], No. 21319/66. Heading C1C. In a sewage treatment plant comprising three tanks in series the middle tank is an aerating tank and at least the first and middle tank are made of cylindrical precast concrete rings mounted on top of one another with the tanks mounted on a common base-plate. The arrangement of tanks may be duplicated so that maintenance of the system is facilitated.
Patent GB-600516-A (GB)
Title: Improvements relating to the stabilisation of current voltage power supplies
IPC: G05F1/52
Filed: 1945-08-21
Abstract: 600,516. Rectifying. BRITISH THOMSON-HOUSTON CO., Ltd., MOIR, J., and BAKER, W. S. GRAFF-. Aug. 21, 1945, No. 21333. [Classes 38 (ii) and 38 (iv)] In a thermionic voltage regulator (Fig. 2) of the type in which current flows from a source 1 to a D.C. load circuit 2 through a tube 3, the potential of the control electrode of which is controlled by a second tube 5 in accordance with the relation of the voltage derived from the potentiometer 7 across the load circuit to the voltage of a reference source 10, changes of this voltage with temperature are compensated by a temperature-dependent resistor 9 connected in series with the potentiometer and thermally coupled to the reference source. The resistor preferably has a negative temperature coefficient and is of the kind described in Specification 540,844, [Group XXXVI]. Alternatively, a resistor with a positive temperature coefficient may be connected at the lower end of the potentiometer. In a modification (Fig. 1, not shown), the invention is applied to a system similar to that described in Specification 547,588, in which the reference voltage is that across a glow discharge tube connected in series with the control tube 5 across the load circuit. The regulating tube 3 may also act as a rectifier. Specification 568,446 also is referred to.
Patent GB-666685-A (GB)
Title: Process of producting magnesium hydroxide and magnesium oxide and products resulting therefrom
IPC: C01F5/22
Filed: 1947-08-06
Abstract: Magnesium hydroxide is produced by reacting dry calcined dolomite, limestone, dolomitic limestone or high magnesia limestone particles having a continuous range of sizes from less than 20 mesh to greater than 200 mesh per linear inch and with a maximum weight of particles between 48 and 100 mesh with sea water and similar solutions, whilst maintaining the larger particles in contact with the water for a longer period of time than the smaller particles, and washing the precipitate.  The seawater may be initially treated by a small quantity of slaked or unslaked lime or calcined dolomite to remove carbon dioxide and bicarbonates present.  A coagulant such as ferric chloride, chlorine gas and hypochlorites may also be added at this stage. Rolling barrel type reactors are advantageously employed. Inert and unreacted material may be removed from the magnesium hydroxide slurry and returned to the reactor.  Washing of the precipitate is preferably effected by a countercurrent of water.
Patent GB-1026197-A (GB)
Title: Method of carbo-nitriding metals
Inventor: DAWES CYRIL
IPC: C23C8/54
Filed: 1962-06-04
Abstract: Metals are carbo-nitrided at 450 DEG -600 DEG C. in a sodium cyanide/potassium cyanide bath to which iron oxide is added to produce cyanate.  The bath normally contains 10% to 30% cyanide and 20% to 30% cyanate by weight, an addition of 0.05% to 2% by weight of iron oxide every eight hours being adequate to maintain the required cyanate level. An exemplified salt mixture consists of 50% by weight of cyanide and 50% alkaline earth metal carbonates oxides or chlorides, the cyanide consisting of potassium and sodium cyanides in the ratio 4:6 by weight.  Metals having deposits of rust or scale may be treated, these being removed by the action of the bath.
Patent GB-792569-A (GB)
Title: Improvements in and relating to rotary atomizing burner apparatus for liquid fuel
IPC: F23D11/04
Filed: 1955-07-26
Abstract: 792,569. Liquid-fuel burners. VERLOOP, H. N. F. July 26,1955, No. 21605/55. Class 75(1) In a liquid-fuel rotary atomizing burner in which a cup-shaped rotary atomizer member is connected to a fuel supply and is coaxially surrounded by a stationary air nozzle sleeve and the axially extending space between the atomizer member and the air nozzle sleeve communicates with the pressure side of a rotary blower for forcing air through this annular space towards the burner mouth and tangentially directed air ports impart to the air entering the annular space a rotary movement in opposition to the direction of rotation of the atomizing member. The tangentially directed air inlet ports are arranged in the wall of the air nozzle sleeve opposite the cup wall preferably in the form of axially extended spaced slots. A hollow shaft 1 through which fuel is fed to a nozzle 3 carries a blower fan 4 held thereon by a screwed sleeve 6 to which a cup-shaped member 2 is secured. The blower casing consists of two parts viz., a rear part to which air is supplied through an inlet 9 and a front part 10 comprising a flat baffle plate 11 which is attached by arc shaped vanes 13 to the outer part of the casing and is provided with a central hub 11a on which an air sleeve 14 is axially adjustably screwed and held in position by a stop 28 screwed on the casing 10 and engaging ribs 29 on the sleeve 14. The sleeve 14 is provided with a number of axially extending tangentially directed slots 16 inclined forwardly and inwardly towards the burner mouth. Air is supplied in the direction of the arrows by the fan 4 through the slots 16 tangentially into the space between the sleeve 14 and the cup 2 in the opposite direction to the rotation of the cup 2. The sleeve 14 is also provided with radially directed slots 17 paired with the slots 16. A regulating sleeve 18 is mounted in the sleeve 14 and is rotatably adjusted by a nut 26 through an arm 22 provided with a pin 21 engaging a fork 20 carried by the sleeve 18. The adjustment of the sleeve 18 can be indicated by a marked disc 24 co-operating with a scale 25. The disc can be locked by a nut 27. When it is desired to alter the flame shape the sleeve 18 is rotated so that outwardly flared ports 19 therein partly uncover both ports 16, 17 or completely uncover either series of ports 16 or 17. The sleeve 18 may also be provided with a port for each port 16 and 17.
Patent GB-1088124-A (GB)
Title: Improvements in or relating to digital voltmeters
Inventor: KNIGHT RICHARD BRYAN DOUGLAS
IPC: H03M1/00
Filed: 1965-05-21
Abstract: 1,088,124. Digital voltmeters. DYNAMCO INSTRUMENTS Ltd. April 29, 1966 [May 21, 1965], No. 21609/65. Addition to 977,120. Heading G4H. The voltmeter of Specification 977,120 is modified in that the A.C. reference voltage derived from the plurality of inductively coupled windings is rectified before comparison with the unknown D.C. voltage. Rectification may be by a semi-conductor or thermionic diode or may be performed synchronously by a switching device.